Monitoring apparatus for monitoring blood pressure of a subject
US10863966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2016 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Aug 10, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0223
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A monitoring apparatus for monitoring a blood pressure information of a subject is disclosed. The monitoring apparatus comprises an ultrasound transducer for emitting ultrasound waves to a volume of the subject that includes a blood vessel and for receiving ultrasound waves from said volume of the subject, and for providing a first signal on the basis of ultrasound waves received from the volume of the subject. A light source is included for emitting light to the subject and a light sensor is included for detecting light received from the subject and for providing a second signal on the basis of the light received from a skin of the subject. The monitoring apparatus comprises a processing unit for determining: i) a time of arrival of a cardiac pulse in the blood vessel based on the first signal, ii) a point in time when the cardiac pulse reaches the skin of the subject based on the second signal, iii) a pulse transit time between the time of arrival of the cardiac pulse PPG in the blood vessel and the point in time when the cardiac pulse reaches the skin of the subject; and iv) the blood pressure based on the pulse transit time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.